// 汽车类
class Car {
    private String engine;
    private String wheels;
    private String seats;

    public void setEngine(String engine) {
        this.engine = engine;
    }

    public void setWheels(String wheels) {
        this.wheels = wheels;
    }

    public void setSeats(String seats) {
        this.seats = seats;
    }

    public String getEngine() {
        return engine;
    }

    public String getWheels() {
        return wheels;
    }

    public String getSeats() {
        return seats;
    }

    // 其他方法...
}
